The TOTal cross-section, Elastic scattering, and diffraction dissociation Measurement (TOTEM) is one of the Large Hadron Collider (LHC) experiments. TOTEM is symmetrically installed in the LHC sectors 45 and 56 beamlines having a total extension of about 400 m and being located around the CMS interaction point (IP5). TOTEM originally consisted of a set of movable detectors named Roman Pots (RPs) utilized for tagging scattered protons and two charged particle telescopes, known as T1 and T2, installed to measure showers produced by hadronized particles from dissociated protons. In Run 3, TOTEM collaboration will complete its physics program in a special fill, where the inelastic component of the proton-proton interaction will be measured. For this purpose, a new telescope (referred to as new T2) has been built. TOTEM's Data Acquisition (DAQ) has been integrated with the CMS environment, this system controls the vertical Si-Strips, meantime the new T2 detectors will be attached to the same DAQ. The CMS DAQ online environment relies on software tools for communication to configure the detector Finite State Machines (FSM), which define transitions to prepare the detectors for the read-out. The communication between central DAQ (CMS) and its subsystems is linked with a scalable software framework called XDAQ within an exchange of SOAP commands. In this work, the development of a new online software utility, written in an object-oriented programming language, which controls the new T2 detectors through a slow control optical link is presented.